Cup bottom



FIG. 1 is a perspective view of a cup bottom showing my new design;

FIG. 2 is a front view of the cup bottom of FIG. 1;

FIG. 3 is a top plan view of the cup bottom of FIG. 1;

FIG. 4 is a bottom view of the cup bottom of FIG. 1;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 3; and,

FIG. 6 is a sectional view taken along line 6-6 of FIG. 3.

The rear, left side, and right side views are the same as FIG. 2. In the drawings, the broken lines show portions of a cup and form no part of the claim. 

CLAIM The ornamental design for a cup bottom, as shown and described. 